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- W4387409727 abstract "In this study, an investigation was conducted on four distinct configurations, designated as Case-1, Case-2, Case-3, and Case-4, focusing on parametric analysis. Each configuration features a cylindrical enclosure containing pure Gallium, a phase change material (PCM). The solid-to-liquid phase transition of the encapsulated material was examined using a 2D CFD methodology. Additionally, the effect of applying three temperatures, T1=32∘C, T2=39∘C, and T3=42∘C, along the generator of the enclosure, with or without fins, was also studied. To accurately model the melting process of the PCM, the Enthalpy- Porosity Method was employed, and meticulous detailing of underlying assumptions was under- taken to ensure precise representation. The validation process involved comparing outcomes of the physical solidification/melting model with reference data from a state-of-the-art study. The specific cases comprised Case-1 - a slender finless cylinder; Case-2 - a thin finned cylinder (l=10mm, t=0.6mm); Case-3 - featuring larger fins (l=20mm, t=0.6mm); and Case-4 - incorporating the largest fins (l=30mm, t=0.6mm). Strategically incorporating thin fins accelerates Gallium melting significantly, reducing times by up to 89%. This enhancement is driven by a 96% increase in the heat transfer coefficient (h), leading to faster melting rates. In addition, fins boost the Nusselt number (Nu) by 91%, indicating improved convective heat transfer and enhanced melting. Melting rates increase by around 30%, notably in Case-3. Temperature T1 shifts dominant heat transfer from convection to conduction, as seen in 2D CFD contours with stratified patterns in Case-3 at t=240s and Case-4 at t=240s and t=300s. A localized cold spot at t = 300s in Case-4 signals localized heat transfer effects." @default.
- W4387409727 created "2023-10-07" @default.
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- W4387409727 date "2023-12-01" @default.
- W4387409727 modified "2023-10-11" @default.
- W4387409727 title "CFD Investigation of Fin Design Influence on Phase Change Material Melting for Solar Thermal Energy Storage" @default.
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- W4387409727 doi "https://doi.org/10.1016/j.prime.2023.100306" @default.
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